kennedy



(No Model.) 3 Sheets-Sheet 1.

G. KENNEDY.

STONE PLANING MACHINE.

No. 454,481. Patented June 23,1891.

(No Model.) 3 Sheets-Sheet 2.

G. KENNEDY.

STONE PLANING MACHINE.

No. 454,481. Patented June 23,1891.

(No Model.) 3 Sheets-Sheet 3.

G. KENNEDY. 8TONE PLANING MACHINE.

No. 454,481. Patented June 23,1891.

"WE-235mm 11 1 MW UNITED STATES PATENT OFFICE.

CHARLES KENNEDY, OF JOLIET, ILLINOIS, ASSIGNOR OF ONE-HALF TO JOHN C. CROMWELL, OF SAME PLACE.

STONE-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 454,481, dated June 23, 1891. Application filed September 19,1890. Serial No. 365,574. (No model.)

To aZZ whom it may concern.-

Be it known that I, CHARLES KENNEDY, a citizen of the United States of America, residing at Joliet, in the county of ill and State of Illinois, have invented certain new and useful Improvements in Stone-Planing Machines, of which the following is a specification, reference being had therein to the accompanying drawings and the letters and figures of reference thereon, forming a part of this specification, in which- Figure 1 is a side elevation. Fig. 2 is a top plan view. Fig. 3 is a vertical cross-section of Fig. 1 of the reciprocating tool-bed, taken on line 1, looking in the direction of the ar row. Fig. 4 is a vertical cross-section of said bed, taken on line 2 of Fig. 1, looking in the direction of the arrow; and Fig. 5 isa perspective view of one of the oscillating toolholders.

This invention relates to certain improvements in stone-planing machines, which improvements are fully set forth and explained in the following specification and claims.

Referring to the drawings, 0 is the bed of the machine, which is intended to rest on and be secured to a foundation of masonry.

S are stands resting 011 and secured to bed 0 and having journal-boxes at their upper ends for receiving the journals of the axles, on which are secured the flanged wheels WV V.

A is a reciprocating tool-bed resting on said flanged wheels WV W, on which it reciprocates within certain limits controlled by a beltshifting mechanism hereinafter explained.

C C are tool-holders for holding, respectively, the roughing-tool 2 and the finishingtool 1. These tool-holders are respectively pivoted to the lower outer sides of the slides B B, attached to the outer sides of the reciprocating-bed A by means of the gibs G and adapted to be vertically adjusted by means of the screws D, having hand-wheels D on their upper ends for the purpose of adjusting the tools to their work.

X X are similar slides to B, and attached to the inner sides of the reciprocating bed A opposite the slides B B and held in place by means of similar gibs, and have respectively pivotally attached to their lower ends toolholders 0 for holding the tools 3 for planing the edges of the stone to be planed. These slides X X are vertically adjusted by means of the screws X X and hand-wheels D, the

said hand-wheels being removable and adapted to fit the square upper ends of both screws The oscillating tool-holder C is provided with the hollow shafts (i, passing through the body of said tool-holder at an angle with each other, which hollow shafts form sockets at their lower extending ends for holding the cutting-tools, and these hollow shafts are intended to be rotated to some extent by means 6 5 of the worm-gearing mechanism 5 8, for the purpose of presenting the cutting-tools to their work in the proper manner.

R is a toothed rack arranged in ways on the under side of the reciprocating bed A, so that it may reciprocate within certain limits, and its teeth project downward, so as to mesh with pinion S secured on shaft 3*, passing through under said rack. Said sliding rack has pivotally attached to its upper side the cross-bar P, the two outer ends of which project out through slots P in the sides of the reciprocating bed A, so that the reciprocating movement of the rack R in the bed A is limited to the length of said slots. The outer 8o ends of the said cross-bar P are respectively connected with the wrists i of the tool-holders O by means of the rods P, by means of which connection the said tool-holders are oscillated to turn the tools 1 and 2 alternately to their 8 5 work as said rack is reciprocated in its ways.

The outer end of shaft S has secured on it the gear-wheel G, which meshes with the pinion G on the outer end of drive-shaft S having ordinary fast pulley J 3 and loose pul- 9o leys J 9 and J to which a drive-belt may be applied to drive the machine.

The reciprocation. of bed A is obtained by means of a belt-shifter, which shifts the bed by means of shifting the drivebelts alter- 9 5 nately from loose pulleys J J on shaft S toa fast pulley J 3 between them. It is intended to have a drive-belt on each of said loose pulleys, one of which belts is crossed, so it will turn its pulleys in the opposite direction from that over which the other belt passes. As these belts are shifted alternately from the said loose pulleys to the fast pulleys J 3 said fast pulley will be turned alternately in opposite directions. This belt-shifting 'mechanism is shown in Fig. 2, and consists of the sliding bar J having the arms J 8 for engaging the belts on said pulleys. The lever J 6 is pivoted at n on the bed 0 and pivoted at its outer end to bar J Arm J 5 is connected to arm J 6 and has its outer end bent to extend upward and be engaged alternately by the extending tappets 2' 2', adjustably attached to rail F on the side of bed A (the broken lines in Fig. 2 showing the upwardly-extending end of arm J for the purpose of shifting the drive-belt, so as to drive shaft S alternately in either direction, as stated.

E is a reciprocating bed for holding on its upper surface the stone to be planed. This bed consists of heavy planking bolted to cross-beams underneath, which are faced on their under side with guideways H H, resting on suitable guides m m, which said bed reciprocates below the tool-holders and at right angles with the bed A above.

S is a shaft located centrally on the upper side of bed 0 and extending its entire length, and is provided on one end with the bevelgear J, which meshes with bevel-pinion J on shaft S having on it the fast pulley J and loose pulleys J and J by means of which shaft S is driven when the machine is used for planing the edges of a stone placed on bed E, and said shaftSis also provided about centrally with pinions S for meshing with racks on the under side of guideways H. The opposite end of shaft S is provided with a hand-wheel B and also a ratchet-wheel R, located next to said hand-wheel.

When the machine is operating to plane the upper surface of a stone secured on bed E, the reciprocation of bed A will cause the tappets Z on rail F, attached to its side, to alternately engage the long arm of bell-crank L. The short arm of said bell-crank is provided with a pawl that engages ratchet wheel R on shaft S. When said tappets Z so engage said bell-crank, the said ratchet-and-pawl mechanism will rotate shaft S intermittently and move bed E forward, so as to feed the work forward to the tools, so that the work will be moved forward at each reciprocation of the tool, so it can take a new cut across the work.

The hand-wheel B furnishes means for reciprocating bed E backward or forward for the purpose of placing it in proper posit-ion at the commencement of a piece of work.

Then it is desired to plane the edges of a stone placed on bed E, the cutting-tools 3 are used, and in such case a pair of belts are ap plied, one on each pulley J and J, on being crossed, so as to turn said pulleys in opposite directions, and designed to be shifted alternately to the fast pulley J between them by means of a belt-shifter cons sting of the sliding bar L having the arms L and the lever L it being intended that the operator may, by means of takinghold of said lever, operate bed E.

the belt-shifter to cause bed E to move in either direction at his will.

WVhen tools 3 are in operation, the tools 1 and 2 are moved upward out of the way, and when the tools 3 are being thus used the bed A with said tools must be moved to its proper position and held stationary, and for such purpose is provided with a hand-wheel 13 having a pinion B on the lower end of its shaft for meshing with a rack B on the side of said bed. (Shown in Figs. 1 and 3 only.) By means of this pinion-and-rack mechanism bed A may be moved and held by locking said pinion, so as to place tools 3 in proper position for planing the edges of the work as it lies on reciprocating bed E, thus adapting the machine for planing the edges as well as the surface of a stone that may be placed on The angle-rails e on the upper surface of bed E are securely bolted thereto and are for the purpose of holding the work on the said bed.

Then the machine is in use for planing the surface of the stone, the pawl on the lower arm of bellcrank L is disengaged from the ratchet-wheel R on shaft S, and rack B and pinion B are placed out of gear by means of sliding said pinion upon its shaft, to which it'is feathered and held by means of a pin passing through its shaft or by any other suitable means.

In operation, when the machine is to be used for planing and dressing off the upper surface of a stone, the stone is placed on bed E and secured therein in such position as to be engaged by the tools 1 and 2, (the tool 2 being what is called the rougher, for making the first cut, and tool 1 being the smoother, for following tool 2 to finish up the work.) The bed E with its work is set by means of turning hand-wheel B so as to cause the said tools to commence at one edge of the stone to do their work. Power being applied to bandwheel J 3 will drive shaft S with its pinion G and gear G and its shaft 8, with its pinion S and reciprocate rack R in whichever direction the belt-shifting mechanism on shaft S may determine until the cross-bar P, attached to said rack, will engage bed A at the ends of the slots P in the sides of said bed, and by means of such engagement move bed A with it until the belt-shifting mechanism causes a reverse movement, when said cross-bars will move to the opposite end of said slots and move bed A in the opposite direction, and thus reciprocate bed A. The object of having cross-bar P move in said slots before it moves bed A is to oscillate tool-holder O by means of its connection with said cross-bar through the medium of rods P, so as to turn the tools 1 and 2, respectively, to their work, and so said tools alternately operate upon the workcne when bed A moves in one direction and the other when said bed returns-so that work is being done continuously at each reciprocation of said bed. When the surface of the stone is finished and it is desired to plane its edges, the machine is set and operated, as before stated, to bring tools 3 in operation for that purpose.

Q are guides secured on the upper ends of the stands S and are arranged to projectover projecting side flanges of bed A to prevent its becoming detached from the top of said stands.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1. In the stone-planing machine shown and described, the combination of the reciprocating bed A, flanged wheels \V IV, slides X X, havingthe tool-holders O 0 attached, respectively, to their lower ends, screw-rods X X, hand-wheels D, rack B", pinion B and its shaft, pinions J J shaft S, pulleys J J J and belt-shifterL L L", all arranged to operate substantially as and for the purpose set forth.

2. In the stone-planing machine shown and described, the combination of the reciprocatingbed A, having the side slots P and toothed rack R, cross-bar P, pivotally attached to said rack and having its ends extending out through said slots and adapted to move within the limits of said slots, oscillating tool-holders C, rods Pfor connecting said cross-bar and toolholders, pinion S shaft S, gear G, pinion G shaft S pulleys J 3 J 4 J belt-shifting bar J lever J arm J rail F, having the adj ustable tappets i '2 rail F, having the adjustable tappets Z Z, bell-crank L and its pawl, and shaft S, having ratchet-wheel R and p'inions S, all arranged to operate substantially as and for the purpose set forth,

3. In the machine for planing stone shown and described, the combination, with the reciprocating bed A, of the rails F and F, the adjustable tappets arranged 011 said rails, and levers L and J, substantially as and for the purpose set forth.

4. In the stone-planing machine shown and described, the combination of bed A, slides X X, sore w-rods X X, hand-wheels D, pinion B and its shaft, hand-wheel 13*, rack B reciprocating bed E, and the means shown and described for reciprocating said bed E, substantially as and for the purpose set forth.

CHARLES KENNEDY.

Witnesses:

Tnos. H. I'IUTOHINS, .T. C. CROMWELL. 

